It's depressing that this is such a common argument against moving away from the ASCII character set. We all use operating systems that allow us to define key sequences for these characters. And it's really easy to remember them after a week or so, I mean, how often do you actually look at the letters on your keyboard anyways?

The main issue is that computers don't come with a standard default layer for math and APL characters anymore so it's a huge leap of faith for someone to start to use these characters.